Table 2.
Physical activity monitors recording information of the study population, according to the NAPAIR Levels.
| PAM Recording Information | Total population | DAP (NAPAIR <0.17) | NAP (NAPAIR≥0.17) |
|---|---|---|---|
| (N = 3,690) | (N = 1,884) | (N = 1,806) | |
| Average valid wearing days, mean (SD) | 5.52 (1.12) | 5.43 (1.12) | 5.62 (1.12) |
| Overall average PA intensity per day, median (IQR), counts/min | |||
| All-day | 362.54 (217.9) | 376.38 (214.53) | 347.11 (217.53) |
| Daytime | 373.74 (229.45) | 402.04 (241.3) | 352.56 (211.55) |
| Nighttime | 277.77 (187.11) | 241.47 (142.34) | 326.37 (229.9) |
| Overall average wearing time per day, median (IQR), hours | |||
| All-day | 15.58 (2.22) | 15.69 (1.93) | 15.42 (2.57) |
| Daytime | 11.78 (2.2) | 12.27 (1.66) | 11.05 (2.69) |
| Nighttime | 3.88 (1.77) | 3.48 (1.13) | 4.37 (2.19) |
PAM, physical activity monitor; SD, standard deviation; IQR, interquartile range; DAP, daytime active population; NAP, nighttime active population; NAPAIR, Nighttime to all-day physical activity intensity ratio.